The conductivity of 0.00241 M acetic acid is 7.896 × 10^–5 S cm^–1. If ${\mathrm{\Lambda }}_{\mathrm{m}}^0$ for acetic acid is 390.5 S cm² mol^–1, the dissociation constant will be -

\(1. \ 2.45 \times 10^{-5} \mathrm{~mol} \ \mathrm{~L}^{-1} \\ 2. \ 1.86 \times 10^{-5} \mathrm{~mol} \ \mathrm{L^{-1}} \\ 3. \ 3.72 \times 10^{-5}\mathrm{~mol} \mathrm{~L^{-1}} \\ 4. \ 2.12 \times 10^{-5}\mathrm{~mol} \mathrm{~L^{-1}}\)

The incorrect statement(s) among the below is/are:

1. a

2. a and d

3. b and d

4. a and c

The conductivity of 0.20 M solution of KCl at 298 K is 0.0248 S cm^–1. The molar conductivity will be -

1. 124 S cm² mol^-1

2. 134 S cm² mol^-1

3. 128 S cm² mol^-1

4. 136 S cm² mol^-1